[CIG-ALL] AGU 2019 DI012: Petrological and Thermal Structure of the Mantle from the Transition Zone to the CMB

Dear Colleagues,

We would like to encourage your participation in our AGU Fall Meeting Session DI012 (https://agu.confex.com/agu/fm19/prelim.cgi/Session/79328): “Petrological and Thermal Structure of the
Mantle from the Transition Zone to the CMB: Causes and Consequences of Phase Transitions.” The AGU abstract portal is open for submissions and the deadline is July 31st.

Session Description:
In the last few decades seismic observations have revealed the structure of the mantle in ever increasing richness. Mineral physics experiments and theory have been uncovering new phase transitions, characterizing changes in the valence and spin state of iron, and determining element partitioning behavior in mantle phases. Concurrently, advances in seismology and geodynamic modeling have been building a consistent picture of Earth in which mantle structures can be identified and their importance to mantle
dynamics can be understood. We now have evidence of seismic structure that is consistent with thermodynamically controlled processes, thermal variations due to mantle convection and petrological variations possibly due to partial melting, primordial reservoirs, mantle segregation and recycling. We seek contributions in experimental, theoretical and observational fields, including seismology, petrology, mineral physics, geochemistry and geodynamics, which investigate the nature and role of phase transitions in the structure and dynamics of Earth’s interior.

Primary Section/Focus Group:

Study of Earth’s Deep Interior

Invited Presenters:

Antoniette G. Grima (University College London): " Slab Orphaning: The Role of Phase
Transitions in Shaping Mid-Mantle Slab Morphologies"

Robert Myhill (University of Bristol): “Iron disproportionation
in majorite-bearing rocks of the Earth’s transition zone and in
Mars’ deep mantle: An experimental study”


Rene Gassmoeller (UC Davis)
Renata Schaan (ENS de Lyon)
Natalia Solomatova (CNRS, ENS de Lyon)

Abstract deadline:
Wednesday July 31, 2019 at 11:59 PM EDT

We look forward to seeing you in San Francisco!

Best wishes on behalf of the conveners,

Natalia Solomatova, Renata Schaan, Rene Gassmoeller